# CN203920150U - A kind of mathematics teaching aid - Google Patents

## Info

Publication number
CN203920150U
CN203920150U CN201420027359.3U CN201420027359U CN203920150U CN 203920150 U CN203920150 U CN 203920150U CN 201420027359 U CN201420027359 U CN 201420027359U CN 203920150 U CN203920150 U CN 203920150U
Authority
CN
China
Prior art keywords
ruler
protractor
chute
chalk
bush
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201420027359.3U
Other languages
Chinese (zh)
Inventor

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201420027359.3U priority Critical patent/CN203920150U/en
Application granted granted Critical
Publication of CN203920150U publication Critical patent/CN203920150U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

## Landscapes

• Drawing Aids And Blackboards (AREA)

## Abstract

The utility model provides a kind of mathematics teaching aid, belong to educational aid field, it comprises successively and connects and surround leg-of-mutton the first ruler, the second ruler and the 3rd ruler and protractor, the intersection point of described the first ruler and the second ruler intersects at the initial point of protractor by tumbler, on described the first ruler and the 3rd ruler, be respectively equipped with chute, in the chute of described the first ruler, be provided with sliding bar, on described sliding bar, be movably equipped with the bush of chalk freely rotating, described the second ruler is arranged in the chute of the 3rd ruler by sliding part.The utility model is simple in structure, ruler, protractor, bush of chalk are combined to the common function that has realized set square, protractor, compasses, and, three rulers are combined with protractor and can draw the angle of any angle or triangle at any angle, ruler is combined with the circle that can draw different radii with bush of chalk, use and carry all very convenient.

## Description

A kind of mathematics teaching aid
(1) technical field
The utility model relates to teaching aid, specifically a kind of mathematics teaching aid.
(2) background technology
Now, teacher is in teaching process, often use teaching aid to map on blackboard, especially in geometric construction presentation process, often need on blackboard, draw the geometric figures such as straight line, line segment, triangle and demonstrate, these teaching aids relatively disperse, and carry inconvenience, during mapping, need to change back and forth, reduce the efficiency of attending class.
(3) summary of the invention
Technical assignment of the present utility model is for the deficiencies in the prior art, and a kind of mathematics teaching aid simple in structure, multiduty is provided.
The utility model solves the technical scheme that its technical problem adopts:
A kind of mathematics teaching aid, comprise successively and connect and surround leg-of-mutton the first ruler, the second ruler and the 3rd ruler and protractor, the intersection point of described the first ruler and the second ruler intersects at the initial point of protractor by tumbler, on described the first ruler and the 3rd ruler, be respectively equipped with chute, in the chute of described the first ruler, be provided with sliding bar, on described sliding bar, be movably equipped with the bush of chalk freely rotating, described the second ruler is arranged in the chute of the 3rd ruler by sliding part.
Further, the back side of described the first ruler, the second ruler and protractor intersection is provided with sucker.
Compared with prior art, the beneficial effect producing is a kind of mathematics teaching aid of the present utility model:
The utility model is simple in structure, ruler, protractor, bush of chalk are combined to the common function that has realized set square, protractor, compasses, and, three rulers are combined with protractor and can draw the angle of any angle or triangle at any angle, ruler is combined with the circle that can draw different radii with bush of chalk, use and carry all very convenient.
(4) accompanying drawing explanation
Accompanying drawing 1 is structure chart of the present utility model.
Accompanying drawing 2 is the amplification assumption diagram of label M in Fig. 1.
In figure, the 1, first ruler, the 2, second ruler, the 3, the 3rd ruler, 4, protractor, 5, tumbler, 6, chute, 7, sliding part, 8, sliding bar, 9, bush of chalk.
(5) specific embodiment
Below in conjunction with accompanying drawing, a kind of mathematics teaching aid of the present utility model is described in detail below.
As shown in accompanying drawing 1,2, a kind of mathematics teaching aid of the present utility model, it comprises successively and connects and surround leg-of-mutton the first ruler 1, the second ruler 2 and the 3rd ruler 3 and protractor 4, the intersection point of described the first ruler 1 and the second ruler 2 intersects at the initial point of protractor 4 by tumbler 5, on described the first ruler 1 and the 3rd ruler 3, be respectively equipped with chute 6, in the chute 6 of described the first ruler 1, be provided with sliding bar 8, on described sliding bar 8, be movably equipped with the bush of chalk 9 freely rotating, described the second ruler 2 is arranged in the chute 6 of the 3rd ruler 3 by sliding part 7.Described the first ruler 1, the second ruler 2 are also provided with sucker with the back side of protractor 4 intersections.
In use procedure, three rulers are combined with protractor 4 and can draw the angle of any angle or triangle at any angle, and ruler is combined with the circle that can draw different radii with bush of chalk 9.
Its processing and fabricating of a kind of mathematics teaching aid of the present utility model is simple and convenient, processing and fabricating shown in by specification accompanying drawing.
Except the technical characterictic described in description, be the known technology of those skilled in the art.

## Claims (2)

1. a mathematics teaching aid, comprise successively and connect and surround leg-of-mutton the first ruler (1), the second ruler (2) and the 3rd ruler (3) and protractor (4), it is characterized in that: the intersection point of described the first ruler (1) and the second ruler (2) intersects at the initial point of protractor (4) by tumbler (5), on described the first ruler (1) and the 3rd ruler (3), be respectively equipped with chute (6), in the chute (6) of described the first ruler (1), be provided with sliding bar (8), on described sliding bar (8), be movably equipped with the bush of chalk (9) freely rotating, described the second ruler (2) is arranged in the chute (6) of the 3rd ruler (3) by sliding part (7).
2. a kind of mathematics teaching aid according to claim 1, is characterized in that: described the first ruler (1), the second ruler (2) are provided with sucker with the back side of protractor (4) intersection.
CN201420027359.3U 2014-01-16 2014-01-16 A kind of mathematics teaching aid Expired - Fee Related CN203920150U (en)

## Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420027359.3U CN203920150U (en) 2014-01-16 2014-01-16 A kind of mathematics teaching aid

## Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420027359.3U CN203920150U (en) 2014-01-16 2014-01-16 A kind of mathematics teaching aid

## Publications (1)

Publication Number Publication Date
CN203920150U true CN203920150U (en) 2014-11-05

# Family

## Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420027359.3U Expired - Fee Related CN203920150U (en) 2014-01-16 2014-01-16 A kind of mathematics teaching aid

## Country Status (1)

CN (1) CN203920150U (en)

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## Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20141105

Termination date: 20160116

EXPY Termination of patent right or utility model